We purchased two small electric heaters from Camping World. They had the typical features including advertising "tip over protection" on the box. They also stated that they were UL Tested. One of them started making a loud noise, then the fan stopped turning. The fan motor had apparently failed. It never shut off. I removed it from service. Then the 2nd one got accidentally knocked over, and it didn't turn off. Turns out it DIDN'T have "tip over protection" as advertised on the box, plus, I had missed the word play on the label that stated "UL Tested" instead of "UL Listed". It was NOT tested and approved by Underwriters Laboratories.
I took them back to Camping World and asked for a refund. They stated that they would refund the broken one, but not the working one since there was "nothing wrong with it". I stated that it didn't have "tip over protection". The manager said, "Yes is does, see, it even says so on the box!" I removed it from the box, plugged it in, turned it on, and knocked it over . . . it continued to run. I got my refund. Camping World no longer sells this heater.
My somewhat long winded post is to reinforce that you need to make sure your heater is Underwriter Laboratories LISTED, and is safe to use in your very expensive motor home or travel trailer. Buy a quality heater. Don't just take what the box says at face value. Turn it on, block the front, see if the over temp protection WORKS, knock it over and verify that it TURNS OFF! There are a lot of good heaters out there. There is also a lot of UNSAFE JUNK! Make sure what you are buying.
Scot & Laura Kellersberger
2001 Newmar 4 wheel drive Dutch Star 3891, 2005 GMC Canyon. Demco Tow Bar & Baseplate U.S.Army (ret) 1985 - 2006